In the Physical Sea model, gravity is not a geometric curvature of spacetime but a Pressure Gradient Force () within the energy-dense medium. Massive objects act as "sinks" or "low-pressure zones" in the Sea, causing the surrounding medium to push other objects toward them.
The gravitational force density () is proportional to the pressure gradient () and inversely proportional to the local medium density ().
is interpreted as a constitutive property of the Sea that scales with its density.
As the Sea thins globally, the effective strength of gravity increases relative to the material density.
Gravity is also expressed as a gradient in the medium's density. Mass causes a localized compression or depletion of the Sea.
Where is the local speed of light/sound in the medium.